【銅(tong)(tong)的(de)密度(du)】銅(tong)(tong)的(de)密度(du)是(shi)多少(shao) 各種銅(tong)(tong)的(de)密度(du)匯總

銅密度

銅密度是多少呢？銅的化學符號為Cu，是一(yi)種(zhong)過渡(du)金屬。銅有很多分類。如(ru)果銅含(han)量(liang)達到99.5～99.95%，那(nei)么(me)就是純銅(tong)(tong)(tong)(tong)(tong)(tong)了(le)。純銅(tong)(tong)(tong)(tong)(tong)(tong)也叫(jiao)做“紫銅(tong)(tong)(tong)(tong)(tong)(tong)”或(huo)者“紅(hong)銅(tong)(tong)(tong)(tong)(tong)(tong)”，一般分為無氧(yang)銅(tong)(tong)(tong)(tong)(tong)(tong)、有氧(yang)銅(tong)(tong)(tong)(tong)(tong)(tong)和特(te)種銅(tong)(tong)(tong)(tong)(tong)(tong)。純銅(tong)(tong)(tong)(tong)(tong)(tong)因(yin)為呈(cheng)現紫色，因(yin)此(ci)被(bei)稱為“紫銅(tong)(tong)(tong)(tong)(tong)(tong)”。如果(guo)是銅(tong)(tong)(tong)(tong)(tong)(tong)和鋅所(suo)組成(cheng)的(de)合金，那(nei)么(me)就是黃銅(tong)(tong)(tong)(tong)(tong)(tong)了(le)。以(yi)鎳為主要添加元(yuan)素的(de)銅(tong)(tong)(tong)(tong)(tong)(tong)基合金，就是吧白(bai)(bai)銅(tong)(tong)(tong)(tong)(tong)(tong)了(le)，白(bai)(bai)銅(tong)(tong)(tong)(tong)(tong)(tong)呈(cheng)銀(yin)白(bai)(bai)色，有金屬光(guang)澤(ze)，故名白(bai)(bai)銅(tong)(tong)(tong)(tong)(tong)(tong)。青銅(tong)(tong)(tong)(tong)(tong)(tong)原指(zhi)銅(tong)(tong)(tong)(tong)(tong)(tong)錫合金﹐后除黃銅(tong)(tong)(tong)(tong)(tong)(tong)﹑白(bai)(bai)銅(tong)(tong)(tong)(tong)(tong)(tong)以(yi)外的(de)銅(tong)(tong)(tong)(tong)(tong)(tong)合金均(jun)稱青銅(tong)(tong)(tong)(tong)(tong)(tong)。那(nei)么(me)不(bu)同的(de)銅(tong)(tong)(tong)(tong)(tong)(tong)，銅(tong)(tong)(tong)(tong)(tong)(tong)密(mi)度(du)當然是不(bu)一樣的(de)了(le)。我們先來說(shuo)說(shuo)銅(tong)(tong)(tong)(tong)(tong)(tong)密(mi)度(du)的(de)定義吧。

銅密度的定義：銅(tong)的質量(liang)與銅(tong)體積(ji)的比(bi)值(zhi)就叫作銅(tong)密度。

銅密度符號和單位：通常用“ρ”（讀做rōu）表示，單位為(wei)g/cm3，正確讀法(fa)是克每立(li)方厘米。還有一(yi)種不常用的單(dan)位是kg/dm3，讀作(zuo)千克(ke)每立方分米。它們之(zhi)間的(de)換算關(guan)系(xi)：lg/cm3=1kg/dm3=103kg/m3。

銅密度的公式：

1、銅密度的公式(shi)：ρ=m/V，ρ=dm/dV（ρ表(biao)(biao)示密度、m表(biao)(biao)示質量、V表(biao)(biao)示體(ti)積）

2、銅密度公式(shi)變形：V=m/ρ，m=ρV，m=∫ρ（V）dV。

3、質(zhi)量(liang)m可(ke)(ke)以用天平測量(liang)，液體和形狀不規則的(de)固體的(de)體積(ji)v可(ke)(ke)以用量(liang)筒或量(liang)杯測量(liang)。

4、物質(zhi)的(de)(de)密度(du)是一(yi)定的(de)(de)，它不(bu)隨體(ti)積和質(zhi)量的(de)(de)變(bian)化而變(bian)化，不(bu)同牌號(hao)的(de)(de)銅密度(du)也(ye)是不(bu)隨體(ti)積變(bian)化而變(bian)化的(de)(de)。

銅密度測量的稱量法：

1、準備(bei)：天平、量筒(tong)、水、銅、細繩(sheng)。

2、步驟：

（1）用天平稱(cheng)出金屬(shu)塊的質量m

（2）往量(liang)筒中注(zhu)入(ru)適量(liang)水(shui)，讀出體積為V1

（3）用細(xi)繩系住銅(tong)塊放入(ru)量筒中，浸沒，讀出體積為V2

3、計算(suan)：銅密(mi)度(du)測(ce)量公式

4、此測量法(fa)只針對實心銅。

銅密度測量的比重杯法：

1、準備(bei)：燒杯、水、銅、天平

2、步驟：

（1）往燒杯裝滿水(shui)，放在(zai)天平上(shang)稱出質量為m1；

（2）將銅塊輕輕放(fang)入(ru)水(shui)中，溢出(chu)部分水(shui)，再將燒(shao)杯放(fang)在天平(ping)上稱出(chu)質量(liang)為m2;

（3）將銅塊取出(chu)，把燒杯放(fang)在天(tian)平(ping)上稱出(chu)燒杯和剩下水的質量m3。

3、計算表達式：ρ=ρ水（m2-m3）/（m1-m3）

純銅密度、黃銅密度、青銅密度、白銅密度：

1、純銅，無氧銅的密度(du)是8.9（g/cm3），磷脫氧銅的密度(du)是8.89（g/cm3）。

2、加工(gong)黃銅的(de)密度(du)是8.5-8.8（g/cm3），鑄造(zao)黃銅的(de)密度(du)是7.7-8.55（g/cm3）。

3、加(jia)工(gong)青(qing)銅(tong)的(de)(de)密(mi)度是7.5-8.9（g/cm3），鑄造青(qing)銅(tong)的(de)(de)密(mi)度是7.45-9.54（g/cm3）。

4、白銅(tong)的密度是8.4-8.9（g/cm3）。

常用銅密度表：

注：表(biao)為加工(gong)后密度：紫銅包括脫(tuo)氧銅8.94g/cm3